CVE-2026-74396
kernel: RDMA/mlx5: Fix UMR XLT cleanup on ODP populate failure
Severity
LowRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · August 15, 2026
Updated · October 29, 2026
Description
A flaw was found in the Linux kernel's RDMA/mlx5 component. When the mlx5_odp_populate_xlt() function encounters an error, it fails to properly clean up allocated resources. This can lead to a memory leak of the XLT DMA mapping and buffer. Additionally, if an emergency XLT page was used, a mutex could remain locked, potentially causing resource exhaustion and a denial of service.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.1 · 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-772 · Missing Release of Resource after Effective Lifetime